At least Emacs 27 is required for this init.el. I'm currently using it on macOS 14 with emacs 29.3 from emacsformacosx.com.

Installation

1. Back up ~/.emacs and ~/.emacs.d if there is anything you wish to keep, then remove both.
2. git clone git://github.com/egamble/.emacs.d.git from your home directory.
3. To open a file in the currently running Emacs.app from a terminal shell, put a link to /Applications/Emacs.app/Contents/MacOS/bin/emacsclient somewhere on your PATH. E.g. ln -s /Applications/Emacs.app/Contents/MacOS/bin/emacsclient /usr/local/bin/emacsclient. You may need to update your PATH in ~/.zshrc with e.g. PATH=/usr/local/bin:$PATH.
4. Verify with which emacsclient that emacsclient comes from /usr/local/bin rather than /usr/bin.
5. A nice shortcut for invoking emacsclient is alias e='emacsclient -n', which you could put in your ~/.zshrc.
6. To use cider, first install leiningen. Then add cider-nrepl to the :repl profile in ~/.lein/profiles.clj. You may also need to add tools.nrepl as a dependency, e.g., {:repl {:plugins [[cider/cider-nrepl "0.11.0-SNAPSHOT"]] :dependencies [[org.clojure/tools.nrepl "0.2.12"]]}}.
7. Whenever you update your ~/.emacs.d from this repo with git pull, remove ~/.emacs.d/elpa prior to restarting emacs. This ensures that the latest versions of the emacs packages are installed.